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Cash and Cash Equivalents (Tables)
12 Months Ended
Mar. 31, 2016
Cash and Cash Equivalents [Abstract]  
Summary of Cash and Cash Equivalents

Cash and cash equivalents consist of the following components:

 

     31 March  
 (Millions of US dollars)    2016      2015  
     

 Cash at bank and on hand

    $             94.5          $ 60.0     

 Short-term deposits

     12.6           7.0     
  

 

 

    

 

 

 

Total cash and cash equivalents

    $ 107.1          $         67.0